CRTEmudriver & VGA2SCART vertical overscan on PAL CRT

[akki007]

New here, I rescued a Toshiba 2112db from the recycling place. It had some vertical fold issues but its been fixed and it looks ace. Here's my boggle...

1. If I connect a Wii using scart or composite, I get a perfect image, no overscan.
2. If I connect a DVD player, same, no overscan

So I dont want to adjust the V size/position (its manual, not in the service menu)

3. If I connect an old PC (AMD R5 430) using CRTemudriver and VGA2SCART, I get:

• Vertical overscan on 288p
• black bars on 240p

I'd like to have the desktop at 576i, but for some reason it wont let me add a 576i resolution to ArcadeOSD, I mean I can add the modeline, but it wont show up to use.

Basically, my question is... how on earth do I get a resolution that fills the screen, and is higher than 240p so I can switch back down in retroarch for gaming, but use the desktop!!